1. Draw the UML class diagram for the code below. Include all class attributes mentioned. class Class1 { private int val; Classi (int num) { val = num; } public String toString() { return val + ""; } } class Class2 extends Classit private int val; Class2 (int num) { super (num); val = num + 1; } public String toString() { return super.toString() + ) + val; } public class Exercise ! public static void main (String[] args) { class1 num1 = new Class1(); Class2 num2 = new Class2(4): System.out.println(numl); System.out.println(num2); numl = new Class2 (5); System.out.println(numl); }